I have been using this brand for some time .I love the tone they give my fretless bass. The tone is even on the hole fret board.It seems in time they get warmer sounding.They are easy to play and easy on the fingers.I understand why JACO used them.

These strings transformed my bass. They're the best I've found at any price point, although I'm sure crazy high-end stuff exists. They're bright enough and the E string sounds much more tonally similar to the other strings than those of other sets I've used. With that .85 I can still drop to D or C# and in fact it sounds better and holds tune better than when I was using fatter strings. Not to mention the improvement in tone - these are indeed very lively.I just wish they had these extra light strings in a flatwound version. But using these makes it worth giving up that sound, to me. They feel a bit rough on the fingers as is and I'm sure they'll accumulate tons of gunk, but they can take a good scrubbing.

My Washburn MB-2 is as slender and graceful as a gazelle. Stringing this delicate beauty with regular .045"-.105" bass strings is like putting highway guard rail cables on it, despite all the neck reinforcement rod adjusting, they pull and bend the neck mercilessly getting up to A440,Installing the Rotosound RS66LA's are like putting ballet slippers on the MB-2. Only one way to describe the Washburn MB-2, Rotosound RS66LA combo.......They were made for each other.